Ms-Brains
  • Ms-Brains
Can somebody help check 12 of my practice questions? I need to make sure they are correct to prepare for class. I will fan and medal
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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Ms-Brains
  • Ms-Brains
#1
gottennis121
  • gottennis121
#1 is correct..
Ms-Brains
  • Ms-Brains
#2 Not sure about this one

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Vocaloid
  • Vocaloid
start by cross multiplying
Vocaloid
  • Vocaloid
7(x-3) = 7x - 21 4*21 = 84 so 7x - 21 = 84 I presume you can take it from there
Ms-Brains
  • Ms-Brains
So B, X=15?
Vocaloid
  • Vocaloid
yea
Ms-Brains
  • Ms-Brains
#3 C or D
Vocaloid
  • Vocaloid
to convert any number to a percent, just multiply by 100
Vocaloid
  • Vocaloid
3.1*100 = ?
Vocaloid
  • Vocaloid
what is 3.1 times 100?
tkhunny
  • tkhunny
@Ms-Brains Please stop posting questions with no work shown. It is not appropriate for you to get others to do your homework or exams for you. Let's see what YOU can do.
Ms-Brains
  • Ms-Brains
Okay @tkhunny I already did the work, and I was just making sure they were correct. Sorry! I didn't know I can't do that. ;-;
Ms-Brains
  • Ms-Brains
3.1 * 100 = 310.0
Vocaloid
  • Vocaloid
good, so which answer choice do you think it is?
Ms-Brains
  • Ms-Brains
B. 310%
Vocaloid
  • Vocaloid
great
tkhunny
  • tkhunny
You did not address my concern. All cheaters say, "I already did the work." The ONLY way for you to differentiate yourself from cheaters is to SHOW your work, not merely claim that you did it. Show YOUR work.
Ms-Brains
  • Ms-Brains
Okay, give me a second to copy my work from paper to the the drawing pad. Lol, Dude I'm not afraid to show my work, it just seems easier like this. But yeah, I'm sorry. And I will post the work from now on. :)
Ms-Brains
  • Ms-Brains
#4
Ms-Brains
  • Ms-Brains
@tkhunny That good?
Vocaloid
  • Vocaloid
yeah that looks good to me
Vocaloid
  • Vocaloid
(there's a simpler way to do it, though. 24 is 3 times 8, so the missing number must be 3 times 7)
Ms-Brains
  • Ms-Brains
#5 I don't know how to show this work, because it seems like you can quickly do it in your head. D?
Vocaloid
  • Vocaloid
yeah to show your work I would just write (0.24)*75
Vocaloid
  • Vocaloid
or, now that I realize it, (0.24)*75 = 0.75*24 = (3/4)*24 = 18
Ms-Brains
  • Ms-Brains
#6 A. (sorry for not showing work. I don't know how to show work for %% problems
Vocaloid
  • Vocaloid
yeah 0.36x = 180
Ms-Brains
  • Ms-Brains
#7
Vocaloid
  • Vocaloid
hm not quite
Vocaloid
  • Vocaloid
keep the proportion consistent either do miles/gallons = miles/gallons or gallons/miles = gallons/miles
Vocaloid
  • Vocaloid
(so, like, don't do something like gallons/miles = miles/gallons because that won't work)
Ms-Brains
  • Ms-Brains
Oh, So If I do 115/5 = 18/x It wouldn't be correct?
Vocaloid
  • Vocaloid
right, because on the left side you have miles/gallons and on the right side you have gallons/miles
Ms-Brains
  • Ms-Brains
is it x/115 = 5/18?
Vocaloid
  • Vocaloid
hmm not quite
Vocaloid
  • Vocaloid
you would need to switch x and 115 for that to work
tkhunny
  • tkhunny
You tell me if it's good. If it's YOUR work, then it's great. Not so much, otherwise.
Ms-Brains
  • Ms-Brains
Hmm? That would mean it is 5/115 = 18/x But ^ that is the same as 5/115 = x/18. Just the back is switched and that doesn't make sense ;-;
Ms-Brains
  • Ms-Brains
Yes, it's my work. Omg, I said I'm sorry. I didn't mean to violate any policy of anything. ;-; @tkhunny
Vocaloid
  • Vocaloid
nope, not quite 5/115 = 18/x and 5/115 = x/18 are not the same proportion
Vocaloid
  • Vocaloid
if you want to keep the two sides equal, you have to switch both, not just one
Vocaloid
  • Vocaloid
5/115 = 18/x is the correct solution because it puts gallons/miles = gallons/miles
tkhunny
  • tkhunny
You and Vocaloid seem to be getting along very well. If you posted questions on separate threads, as is customarily recommended, you could give Vocaloid more medals for all the good work. :-)
Ms-Brains
  • Ms-Brains
Oh...okay. I get it now! so back to the question.. it's C, right?
Vocaloid
  • Vocaloid
ahaha I don't really care about medals, I just do this for fun :P
Vocaloid
  • Vocaloid
nope not C, think carefully
Vocaloid
  • Vocaloid
|dw:1449369126602:dw|
Vocaloid
  • Vocaloid
|dw:1449369151259:dw|
Vocaloid
  • Vocaloid
|dw:1449369172982:dw|
Ms-Brains
  • Ms-Brains
D, 0-0 I give up if it's not this Dx
Vocaloid
  • Vocaloid
yeah it's D
Vocaloid
  • Vocaloid
|dw:1449369271280:dw|
Ms-Brains
  • Ms-Brains
Yay me! Let me post a new thread for you to get more medals :) Give me a second

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